I got this weird bug with Crusade. In an attempt to enable diplomacy with the civilizations being crushed the heel under my righteous armies and resettle again, I changed my Cultural Values civic. Something's off about it, since it gives me a popup to warn me that some units will abandon me should I do that - all right, I press ok. It doesn't work immediately, and I end up keep pressing for some seconds more 'till it does. Then anarchy happens which seems to be normal, but afterwards...I can't really do a bunch of stuff. I can't do diplomacy, or select any of my units. Mousing over stuff on the map gives no information. Can't even get results pressing escape or enter! The stuff I can do is pressing the stuff over the top (science/culture rates, technology currently researched, advisors, Civilopedia, the main menu [I can access it, if I click on the icon], and the like), and pressing the skip/end turn button.